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Finding the Fourth Proportional to 66,051.76, 99,214.68 and 53,415.76

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Solution

The fourth proportional to 66,051.76, 99,214.68 and 53,415.76 is: 80,234.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,051.76 : 99,214.68 = 53,415.76 : x
  2. Step 2: Convert to fraction form
    66,051.76/99,214.68 = 53,415.76/x
  3. Step 3: Cross multiply
    66,051.76x = 99,214.68 × 53,415.76
  4. Step 4: Simplify right side
    66,051.76x = 5,299,627,535.36
  5. Step 5: Solve for x
    x = 5,299,627,535.36/66,051.76
  6. Step 6: Final answer
    x = 80,234.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.